RAID
RAID (Redundant Array of Independent Disks) is a data storage virtualization technology that combines multiple physical disk drives into one or more logical units for data redundancy, performance improvement, or both. It distributes data across the drives using various methods called RAID levels, such as mirroring, striping, and parity, to protect against drive failures and enhance read/write speeds. This technology is widely used in servers, storage systems, and high-availability computing environments to ensure data integrity and availability.
Developers should learn RAID configurations when working on systems that require high data reliability, performance, or both, such as database servers, file servers, or applications handling critical data. It is essential for designing storage solutions that minimize downtime and data loss due to disk failures, and for optimizing I/O performance in data-intensive applications. Understanding RAID helps in making informed decisions about storage architecture in cloud infrastructure, on-premises servers, and enterprise IT environments.